Sapphire Plug-ins for Autodesk: Clouds

Clouds

Generates a procedural noise texture. Use the Frequency parameter to zoom in
and out of the texture. The Shift Speed parameters cause the texture to automatically
translate over time.

Inputs:

None

Parameters:

Load Preset:
Push-button
.
Brings up the Preset Browser to browse all available presets for this effect.

Save Preset:
Push-button
.
Brings up the Preset Save dialog to save a preset for this effect.

Frequency:
Default:
2,
Range:
0.01 or greater.
The spatial frequency of the clouds. Increase to zoom
out, decrease to zoom in. Very high values of Frequency are clamped
internally so the grain size is no smaller than a few pixels. If
you want even finer grain use S_Grain or S_Clouds:Perspective instead.

Frequency Rel X:
Default:
0.4,
Range:
0.01 or greater.
The relative horizontal frequency of the texture.
Increase to stretch it vertically or decrease to stretch it
horizontally.

Octaves:
Integer, Default:
8,
Range:
1 to 10.
The number of summed layers of noise. Each octave is twice
the frequency and half the amplitude of the previous. A single octave
gives a smooth texture. Adding octaves makes the result approach a
fractal (1/f) noise texture.

Seed:
Default:
0.234,
Range:
0 or greater.
Used to initialize the random number generator. The actual
seed value is not significant, but different seeds give different
results and the same value should give a repeatable result.

Shift Start:
X & Y, Default:
[0 0],
Range:
any,
Shared
.
Translation offset of the texture. Since the texture is
procedurally generated it can be shifted with no repeating units or
seams occurring.

Shift Speed:
X & Y, Default:
[0.5 0],
Range:
any,
Shared
.
Translation speed of the texture. If non-zero, the
result is automatically animated to shift at this rate. The result
of animated Speed values may not be intuitive, so for variable
speed motion it is usually best to set this to 0 and animate the
Shift Start values instead.

Offset0:
Default:
0,
Range:
any,
Shared
.
Adds this value to color0. Decrease to a negative value
for more contrast.

Params2:

Boiling Mode:
Check-box, Default:
off.
When enabled, the clouds will boil, or evolve, over
time. This mode takes slightly more computation but usually looks
better.

Boil Details:
Default:
0.55,
Range:
0 to 1.
Increases or decreases the amount of fine detail in
the clouds. Decrease to get a smoother look, increase to get a more
high-frequency, noisy look. Only used when Boiling Mode is
enabled.

Boil Speed:
Default:
1,
Range:
any.
Sets the speed of the cloud boiling. Zero gives no
boiling at all. Only used when Boiling Mode is enabled.

Params3:

Blur Mocha:
Default:
0,
Range:
0 or greater,
Shared
.
Blurs the Mocha Mask by this amount before using.
This can be used to soften the edges or quantization artifacts of
the mask, and smooth out the time displacements.